[DAS2] Full Spec?

[Brian Gilman]

Hello Everyone,

	Is there a full specification for DAS 2 somewhere? Can someone please 
send it to me? I'd like to read it again and cannot seem to find it in 
my e-mail anywhere.


						Best,

								-B
-- 
Brian Gilman
President Panther Informatics Inc.

01000010 01101001 01101111
01001001 01101110 01100110
01101111 01110010 01101101
01100001 01110100 01101001
01100011 01101001 01100001
01101110

On Dec 20, 2004, at 9:42 PM, Chervitz, Steve wrote:

> I just committed a new version of das2_get.html with this change:
>
> RCS file: /home/repository/biodas/das/das2/das2_get.html,v
> ----------------------------
> revision 1.2
> date: 2004/12/21 02:43:42;  author: sac;  state: Exp;  lines: +50 -49
> Converted mime types from application/x-das-foo to text/x-das-foo+xml 
> for
> XML types. For non-XML types omitting the '+xml' and adding an 'x-' 
> suffix
> to the right of the slash as needed.
>
> Steve
>
>
>> From: Allen Day <allenday at ucla.edu>
>> Date: Fri, 17 Dec 2004 23:14:54 -0800
>> To: Andrew Dalke <dalke at dalkescientific.com>
>> Cc: <das2 at portal.open-bio.org>
>> Subject: Re: [DAS2] Content type for DAS XML responses
>>
>> sounds good, can we get a patch to the spec so i can make the 
>> necessary
>> implementation changes and test against browsers?  thanks!
>>
>> -allen
>>
>>
>> On Fri, 17 Dec 2004, Andrew Dalke wrote:
>>
>>> Steve:
>>>> Currently, the DAS/2 spec dictates that responses should have
>>>> content-types
>>>> like:
>>>>
>>>>   application/x-das-source
>>>>   application/x-das-types
>>>>   application/x-das-region
>>>>
>>>> Changing these to be 'text/xml' would be more convenient since the
>>>> content
>>>> would then be viewable in a standard web browser.
>>>
>>> A browser should send something like
>>>
>>> Accept: */*
>>>    or
>>> Accept: application/xml
>>>
>>> or some other generic content type in its headers.  One solution
>>> to at least consider is that IF a client does not request
>>> application/x-das-whatever THEN return application/xml .  I do
>>> not believe this is appropriate though.
>>>
>>>
>>>>   text/xml; dasformat=source
>>>>   text/xml; dasformat=types
>>>>   text/xml; dasformat=region
>>>
>>> I get confused; is it "text/xml" or "application/xml"?  Ah-ha!
>>> RFC 3023 says (  http://www.faqs.org/rfcs/rfc3023.html )
>>>
>>>     If an XML document -- that is, the unprocessed, source XML 
>>> document
>>>     -- is readable by casual users, text/xml is preferable to
>>>     application/xml.  MIME user agents (and web user agents) that do 
>>> not
>>>     have explicit support for text/xml will treat it as text/plain, 
>>> for
>>>     example, by displaying the XML MIME entity as plain text.
>>>     Application/xml is preferable when the XML MIME entity is 
>>> unreadable
>>>     by casual users.
>>>
>>> That RFC is relevant to this discussion.  If I understand it
>>> correctly it recommends using something more like
>>>
>>>    text/x-das-source+xml
>>>
>>> This would be understood by RFC 3023 compliant clients as
>>> containing an XML document, by DAS clients to understand
>>> which DAS XML format is used, and by generic clients to
>>> contain an XML document.
>>>
>>>> The corresponding compact content-types could be:
>>>>
>>>>   text/plain; dasformat=compact-source
>>>>   text/plain; dasformat=compact-types
>>>>   text/plain; dasformat=compact-region
>>>
>>> There should be no need for this.  A client should use
>>> the catch-all text/* handler for text/x-compact-source
>>> and show it as normal text.
>>>
>>>> And other types could be:
>>>>
>>>>   text/plain; dasformat=fasta
>>>>   text/plain; dasformat=gff3
>>>>   text/plain; dasformat=bed
>>>
>>> Same for these.  What's the problem with
>>>    text/x-fasta , etc.?
>>>
>>> See also the discussion in appendix A.5 which describes
>>> practical problems about using parameter in MIME types.
>>>
>>>                                       Andrew
>>>                                       dalke at dalkescientific.com
>>>
>>> _______________________________________________
>>> DAS2 mailing list
>>> DAS2 at portal.open-bio.org
>>> http://portal.open-bio.org/mailman/listinfo/das2
>>>
>> _______________________________________________
>> DAS2 mailing list
>> DAS2 at portal.open-bio.org
>> http://portal.open-bio.org/mailman/listinfo/das2
>
> _______________________________________________
> DAS2 mailing list
> DAS2 at portal.open-bio.org
> http://portal.open-bio.org/mailman/listinfo/das2
>